San Diego’s Qualcomm still dominates the mobile chip-making industry. But it’s not untouchable, as a perfect storm of regulatory scrutiny, falling market share and pressure to stay on top in China’s ultracompetitive smartphone market has made clear.

“There’s a huge economic impact here,” Councilwoman Lorie Zapf said Tuesday in voting for a stadium environmental report. But for more than a decade, economists have said professional sports subsidies don’t help the economy.

Comic-Con and the Convention Center Corp. both say some hoteliers’ unwillingness to sign off on discounted hotel blocks for attendees is what’s keeping the massive convention from committing to San Diego.